INDEX. 



647 



Page. 



Yellow Jacket mine, ore in depth.. 52 



operations of . 180 



fire in 184 



Yerrington furnace 256 



Yield of ores, Comstock lode . . 159, IGO 

 relation of to assay 

 value 241, 245 



Page. 



Yield of ores in Colorado, Bobtail 



lode.. 517,518,519,522 

 in Colorado gold re- 

 gion, percentage 

 obtained.- 560,563,566 

 in First National 



mine 538,539 



Young, Frank C, cited 493, 587 



